What sort of evidence would support at least one of the components of cell theory?

Anurse practitioner prepares an injection of promethazine, an antihistamine used to treat allergic rhinitis. if the stock bottle is labeled 25 mg/ml and the order is a dose of 11.0 mg , how many milliliters will the nurse draw up in the syringe?

What is the number of moles in 15.0 g ash3?

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !